﻿/****************************************************************************************************
	Copyright (C) 2010 RapidWebDev Organization (http://rapidwebdev.org)
	Author: Eunge, Legal Name: Jian Liu, Email: eunge.liu@RapidWebDev.org

	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation, either version 2 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ****************************************************************************************************/

using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using BaoJianSoft.ExtensionModel.Properties;
using System.Collections;

namespace BaoJianSoft.ExtensionModel.Statistic
{
	/// <summary>
	/// The filter algorithm to check whether the analyzing property value contains configured value.
	/// The "contains" algorithm only works for String/Enumerable typed value.
	/// </summary>
	public partial class ContainsStatisticFilter
	{
		/// <summary>
		/// Does the value match the algorithm.
		/// </summary>
		/// <param name="value"></param>
		/// <returns></returns>
		public override bool IsMatch(object value)
		{
			if (value == null) return false;

			try
			{
				if (this.PropertyType == PropertyTypes.String)
					return value.ToString().Contains(this.Item.Value);
				else if (this.PropertyType == PropertyTypes.Enumerable)
				{
					IEnumerable<string> enumerableStrings = (value as IEnumerable).Cast<object>().Select(obj => obj.ToString());
					return enumerableStrings.Contains(this.Item.Value);
				}
			}
			catch
			{
				return false;
			}

			throw new NotSupportedException();
		}

		/// <summary>
		/// Convert the instance to string.
		/// </summary>
		/// <returns></returns>
		public override string ToString()
		{
			return string.Format(CultureInfo.InvariantCulture, "{0} {1} {2}", this.PropertyLabel, Resources.Contains, this.Item.Text);
		}
	}
}
